Improvement in fix for furnaces



UNITED STATES PATENT OFFICE.

LABS NELSEX AXD THOWAS lllCNEFF, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN FIX FOR FURNACES.

Specification forming part of Letters Patent No. 147,064, dated February 3, 1874; application filed August 16, 1873.

To all whom it may concern Be it known that we, LABS NELSEN and THOMASMGNEFF, of Chicago, in the county of Cook and State of Illinois, have invented anew and useful Improvement in Fire-Proof Composition for Lining Reverberatory and other Furnaces, of which the following is a specification e Our object in this invention is to provide means for lining or repairing reverberatory and'other furnaces without cooling them,1nore especially designed for rcverberatory furnaces, but applicable to other kinds; and it consists in a compound or composition consisting of one part of fire-clay, two parts of tiresand, and one part of ground coke.

The above ingredients are finely pulverized and mixed together with sutlicient water to form a mass of the consistency of common mortar.

To line a furnace with the ordinary cement and fire-brick, it is necessary that the furnace should be cooled ofl, as the cement will not stick or adhere to a hot surface. To stop the tire, and cool off a furnace when the lining fails, requires some days, and is a very expensive operation. Our composition can he applied when the surface is hot, and without interrupting the usual operations of the furnace. N0 fire-bricks are required, and no time is lost in lining or lepairing the lining of the furnace.

\Ve are aware that it has been proposed t employ, as a lining for molds and crucibles, a compound of plumbago, fire-clay, fire-sand, and pulverized coke, in proportions varying, however, from ours.

Owing to the presence of plumbago in said compound it is not adapted as a lining for smelting-furnaces, as the molten iron or other metal will combine with the plumbago and disintegrate or destroy the lining in a comparatively brief time.

By omitting the plumbago, and by using fire-sand, tireclay, and coke, in tl e )IOlX tions specified, we obtain a lining whiei is not destroyed in the furnace when the ores are in a molten state, for the latter will not attack either of the materials mentioned.

Having thus described our invention, we claim as new and desire to secure by Letters Iatent A lining for smelting-furna es composed of fire-clay, fire sand, and ground coke, compounded in the proportions specified, and applied as set forth.

LABS NELSEJ.

hi THonAs X5 MoNEFF. 

